Hi Mark:
Google shows up quite a lot, e.g. http://www.uoregon.edu/~robinh/arcsin.txt. To add to the
confusion: you have even more options. Nick Cox, Stephen Jenkins and I have written the -betafit-
command that can fit a regression through the untransformed proportions by assuming that the
proportions follow a beta distribution. Good and very readable descriptions can be found in the
references in the help file of -betafit-. An alternative approach is the one proposed by Papke, L.
E. and J. Wooldridge.
HTH,
Maarten
Papke, L. E. and J. Wooldridge. 1996. Econometric methods for fractional response variables with
an application to 401(k) plan participation rates. Journal of Applied Econometrics 11: 619�632.
--- sstww <[email protected]> wrote:
> However, recently, I read about another highly
> recommendated transformation method for percentage
> data, arcsine transformation: (y=sine(x)^-1). Can
> anyone tell me about the pros and cons of these two
> methods for transforming proportion (percentage)
> data, and which one should be used for what situation?
-----------------------------------------
**between 1/2/2006 and 31/3/2006 I will be**
**visiting the UCLA, during this time the**
**best way to reach me is by email**
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting adress:
Buitenveldertselaan 3 (Metropolitan), room Z214
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
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